From 383eb1a7287a3e3fdca5a23c7c56a969ab48dd1e Mon Sep 17 00:00:00 2001 From: Salt Date: Sat, 8 May 2021 17:01:20 -0500 Subject: [PATCH] Add ticker script --- tick | 165 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 165 insertions(+) create mode 100755 tick diff --git a/tick b/tick new file mode 100755 index 0000000..04cfd18 --- /dev/null +++ b/tick @@ -0,0 +1,165 @@ +#! /bin/bash +# +# tick +# A program to get the price of a symbol from Binance +# Copyright (C) 2021 Vintage Salt +# +# Distributed under terms of the MIT license. +# +set -e + +# Read-only set-once variables +declare -r _name="$(basename -- "$0")" +# Options +declare -i _opthelp +declare -i _optverbose +declare -i _optcolor +declare _optsymbol +# Working variables +declare -a _args +declare _return + +# Helper functions +log() { + # Print a line to the terminal if _optverbose is greater than $2 + # $2 defaults to 0 + # loglevel 0: Daily-use messages + # loglevel 1: Detailed but not quite debugging + # loglevel 2: Definitely debugging + [ -z "$1" ] && return 1 + if (( _optverbose >= ${2:-0} )); then + printf "%s\\n" "$1" + fi +} +warn() { + # Print a yellow line to the terminal, respecting _optverbose + [ -z "$1" ] && return 1 + if (( _optverbose >= ${2:-0} )); then + if [ -t 1 ]; then + printf "\\e[33m%s\\e[0m\\n" "$1" + else + printf "WARN: %s\\n" "$1" + fi + fi +} +error() { + # Print a red line to the terminal, exit if $2 is specified + [ -z "$1" ] && return 1 + if [ -t 2 ]; then + printf "\\e[31m%s\\e[0m\\n" "$1" 1>&2 + else + printf "ERROR: %s\\n" "$1" 1>&2 + fi + [ -z "$2" ] && return + exit "${2:-1}" +} +has() { + # Parse out all arguments and try to find them in path + # If an argument cannot be found, set _return and fail + for prog in "$@"; do + if ! command -v "$prog" > /dev/null 2>&1; then + _return="$prog" + return 1 + fi + done + return 0 +} + +# Core program functions +printhelp() { + cat << EOF +Usage: $_name [OPTION]... SYMBOL +Get the 24hr price change for a particular symbol from Binance + + -c Add color to the output + -d SYMBOL Change the symbol displayed. Useful for comparisons against USDC + and other stablecoins + -h Print this help text + -v Print more status messages. Stacks + +Copyright (c) 2021 rehashedsalt@cock.li +Licensed under the MIT license +EOF +} +getprice() { + # Get the price of a coin from Binance + [ -z "$1" ] && return 1 + symbol="$1" + result="$(curl -sL "https://api.binance.com/api/v3/ticker/24hr?symbol=$symbol")" + # Test to see if we got an error + if echo "$result" | jq '.code' -e > /dev/null 2>&1; then + code="$(echo "$result" | jq -re '.code')" + msg="$(echo "$result" | jq -re '.msg')" + error "Error $code: $msg" 51 + fi + # Parse out the data + if [ -n "$_optsymbol" ]; then + symbol="$_optsymbol" + else + symbol="$(echo "$result" | jq -re '.symbol')" + fi + price="$(echo "$result" | jq -re '.priceChangePercent')" + if [ -n "$_optcolor" ]; then + if [[ "$price" == -* ]]; then + price="\e[31m$price\e[0m" + else + price="\e[32m$price\e[0m" + fi + fi + printf "$symbol $price\n" +} + +# Main +main() { + # Parse out arguments + while [ -n "$1" ]; do + # Parse out flags + while getopts ":cd:hv" opt; do + case $opt in + c) + _optcolor=1 + ;; + d) + _optsymbol="$OPTARG" + ;; + h) + _opthelp=1 + ;; + v) + _optverbose+=1 + ;; + :) + error "Option requires argument: -$OPTARG" 2 + ;; + *) + error "Invalid option: -$OPTARG" 2 + ;; + esac + done + # Store arguments + shift $((OPTIND - 1)) + if [ -n "$1" ]; then + _args+=("$1") + shift + fi + unset OPTIND + done + # Early hook for help + [ -n "$_opthelp" ] && printhelp && exit 0 + # Validate critical options + if [ -z "${_args[*]}" ]; then + error "No symbol specified" 50 + fi + # Validate core program dependencies + log "Validating dependencies" 2 + if ! has basename curl jq; then + error "Failed to find program: $_return" 1 + fi + + # Do the do + getprice "${_args[0]}" + exit 0 +} + +main "$@" +